Surging Underpowered My06 liberty2.0

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hey people,  hopefully someone has had this issue and can help.

my Liberty 2.0 feels underpowered or even surges under 3000rpm. after the 3k mark it takes off like normal, problem is intermitant and sometimes slight and sometimes bad.

dealer mechanics have checked all the usual suspects including firmware upgrade from Subaru, issue is still there.

ideas or thoughts?

Edited By:  Sirshagsabit
06-07-11 07:35 PM
Sirshagsabit
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Re: Surging Underpowered My06 liberty2.0

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Sounds like similar to my issues on my b4 , which im yet to pin point.

try these

Vaclines blocked or not connected
o2 Senser bad
MAF dirty
Knock Sensor issue

Ganguskarn
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MY02 B4 BLACK MICA
VF23 ,ViPEC V7-9 PNP ECU
BUG-STI INTAKE MANIFOLD
GFB RESPONSE BOV , WRX TMIC
XFORCE FULL 3' SS TBE,VAREX REAR VMK6-300. STAINLESS 3' CAI
SARD RJ + DUAL RAILS
DBA4650S + WRX 4 POTS
FRONT & REAR STRUT BRACES
GRIMMSPEED 3PORT BC



ATWKW : ??????

Re: Surging Underpowered My06 liberty2.0

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my guess would be o2 sensor had this problem in my 2.5 and replacing the o2 sensor fixed it

anty109
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Re: Surging Underpowered My06 liberty2.0

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dealer mechanics are normally the worst, using the blow by blow fault finding

Ganguskarn
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Posts:  241

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MY02 B4 BLACK MICA
VF23 ,ViPEC V7-9 PNP ECU
BUG-STI INTAKE MANIFOLD
GFB RESPONSE BOV , WRX TMIC
XFORCE FULL 3' SS TBE,VAREX REAR VMK6-300. STAINLESS 3' CAI
SARD RJ + DUAL RAILS
DBA4650S + WRX 4 POTS
FRONT & REAR STRUT BRACES
GRIMMSPEED 3PORT BC



ATWKW : ??????

Re: Surging Underpowered My06 liberty2.0

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yer never been happy with dealer mechanics, but being within Warrenty period thought i would give it too them.. thanks for your feedback guys, i wil try the o2 sensor replacment first up.

Sirshagsabit
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Re: Surging Underpowered My06 liberty2.0

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anty109 wrote:

my guess would be o2 sensor had this problem in my 2.5 and replacing the o2 sensor fixed it
dam... did you pay $400 just for supply of the sensor? just quoted $409 plus 121 fitment from Subaru, no listings from Repco and the likes for them

sad

Sirshagsabit
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Re: Surging Underpowered My06 liberty2.0

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and and can someone please explain which sensor is which? theres two at the front directly under the left hand side of the engine, and i think the 02 sensor is further along the exhaust near the Cat right?

it seems that quite a few people have had this same issue and theres alot of maybe try this or that.. i think its almost time to open up the savings account and leave the problem in Subarus hands..

Sirshagsabit
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Re: Surging Underpowered My06 liberty2.0

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http://i1088.photobucket.com/albums/i333/ganguskarn/8f151069.jpg

Ganguskarn
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Posts:  241

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MY02 B4 BLACK MICA
VF23 ,ViPEC V7-9 PNP ECU
BUG-STI INTAKE MANIFOLD
GFB RESPONSE BOV , WRX TMIC
XFORCE FULL 3' SS TBE,VAREX REAR VMK6-300. STAINLESS 3' CAI
SARD RJ + DUAL RAILS
DBA4650S + WRX 4 POTS
FRONT & REAR STRUT BRACES
GRIMMSPEED 3PORT BC



ATWKW : ??????

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